Change Background Color of Shiny App
None of the solutions for changing R shiny app background color are working for me. I'm new to CSS and HTML, so would love some help. I've tried adding "tags$style(".well {background-color:[#000000];}")," in various places of my code, as well as some other solutions i found in stackover flow, but nothing has worked.
Goal is to change the red scribbled area to black or grey. I would also be interested in changing the tabBox color, but it's not my primary goal. See below: 
Here is my code for UI:
library('shiny')
library('shinyjs')
library('shinydashboard')
##########
header<-dashboardHeader(titleWidth = 325)
header$children[[2]]$children <-
tags$a(tags$img(src='image.PNG',height='45',width='184'))
######
body<-dashboardBody( tags$style(".span12 {background-color: black;}"),
useShinyjs(),
tags$style(type='text/css', ".skin-blue .main-header .logo {background-color: #000000}" ),
tags$style(type='text/css', ".skin-blue .main-header .logo:hover {background-color: #000000}"),
tags$style(type='text/css', ".skin-blue .main-header .navbar {background-color: #000000}"),
tags$style(type="text/css",".shiny-output-error { visibility: hidden; }",".shiny-output-error:before { visibility: hidden; }"),
fluidPage(
#img(src="img2.PNG",height="100%", width="100%"),
tabBox("Menu Surf Database", width = 12,
tabPanel("Menu Surf Database",
tabsetPanel(
tabPanel("LTO Survey results",
h2(strong(textOutput("t"))),
h4(textOutput("Description")),
h2(strong("LTO Results"),align='center'),
h4(strong(textOutput("Price"))),
br(),
plotOutput("Q4plot",height = 200),
br(),br(),
plotOutput("seasonPlot",height=200),
br(),br(),
plotOutput("Q1plot"),
br(),br()),
tabPanel("Demographics",
h2(strong(textOutput("t2"))),
h4(textOutput("Description2")),
h2(strong("Demographics of Top Two Box:"),align='center'),
h3(strong("By Purchase Intent"),align= "center"),
br(),
plotOutput("demoPlot1"),
plotOutput("demoPlot2")
))),
tabPanel("Exploratory Comparison",
tabsetPanel(
tabPanel("Visuals",
h2(strong("Proprietary Menu Surf Results:")),
selectInput("index",label = "Index by:",choices = c("Meal Part","Day Part"),selected = "Meal Part",multiple = FALSE),
checkboxInput("addItem", label="Include sidebar item for comparision?", value = FALSE, width = NULL),
h4(strong("Purchase Intent Indices:")),
plotOutput("prop1"),
h4(strong("Uniqueness Indices:")),
plotOutput("prop2"),
h4(strong("Draw Indices:")),
plotOutput("prop3"),
h4(strong("Cravebility Indices:")),
plotOutput("prop4"),
h4(strong("Brand Fit Indices")),
plotOutput("prop5")
),
tabPanel("Tables",
h2(strong("Menu Surf Results, tables:")),
h3("Purchase Intent"),
br(),
dataTableOutput("propTable1")
)))
)))
sidebar<-dashboardSidebar(width = 325,
conditionalPanel(
condition = "$('li.active a').first().html()==='Menu Surf Database'",
h4("Filters:"),
br(),
selectInput('month',label='Month:',choices= month.name,multiple = TRUE,selected = "March"),
selectInput("year",label= "Year:",choices= c("2017"),multiple = FALSE,selected = "2017"),
selectInput("daypart",label = "Day Part:",choices=c("Breakfast","Lunch/Dinner"),selected = c("Breakfast","Lunch/Dinner"),multiple = TRUE),
selectInput("mealpart",label="Meal Part:",choices =c("Adult Beverage","App/Starter","Dessert","Ent/Main Dish","Non-Alcohol Beverage","Side/Extra","Snack"),selected = c("Adult Beverage","App/Starter","Dessert","Ent/Main Dish","Non-Alcohol Beverage","Side/Extra","Snack"),multiple = TRUE),
selectInput("courseCategory",label = "Course Category:",choices = c('All','Asian Bowl','Baked Goods','Beef Dish','Beverage','Breaded Other',
'Breaded Protein','Breaded Vegetables','Breads','Breakfast Starch',
'Burgers','Chicken Dish','Combo Plates','Egg Dish','Fish Dish','Fried Dessert',
'Fries','Frozen Beverage','Ice Cream','Mexican','Mixed Grill','Nachos','Pasta/Noodles',
'Pizza','Pork Dish','Salad Main Dish','Sandwich','Shellfish Dish','Soup','Specialty Drinks'
),selected= 'All',multiple = FALSE),
#textOutput('test'),
uiOutput('restChoices'),
uiOutput('itemChoices'),
br(),
h5("Edit data by demographic features below:"),
selectInput('gender',label = "Gender:",choices = c("Female","Male"),multiple = TRUE,selected = c("Female","Male")),
selectInput('generation',label = "Generation:",choices = c("Generation Z","Millennials","Generation X","Baby Boomers","Matures"),selected = c("Generation Z","Millennials","Generation X","Baby Boomers","Matures"),multiple = TRUE),
selectInput('ethnicity',label ='Ethnicity:',choices = c("Asian","Black/African American (non-Hispanic)","Caucasian (non-Hispanic)","Hispanic","Mixed ethnic background","Other"),selected = c("Asian","Black/African American (non-Hispanic)","Caucasian (non-Hispanic)","Hispanic","Mixed ethnic background","Other"),multiple = TRUE),
selectInput('ea',label = 'Eater Archetype:', choices = c("Affluent Socializers","Bargain Hunters","Busy Balancers","FS Hobbyist","FS Hobbyists","Functional Eater","Functional Eaters","Habitual Matures","Health Enthusiast","Health Enthusiasts"),selected = c("Affluent Socializers","Bargain Hunters","Busy Balancers","FS Hobbyist","FS Hobbyists","Functional Eater","Functional Eaters","Habitual Matures","Health Enthusiast","Health Enthusiasts"),multiple = TRUE)
),
conditionalPanel(
condition = "$('li.active a').first().html()==='Exploratory Comparison'",
#h5("The Exploratory Comparison tab allows you to view results for many items. Please filter for your results below."),
h4("Filters:"),
br(),
selectInput('month2',label='Month:',choices= month.name,multiple = TRUE,selected = "March"),
selectInput("year2",label= "Year:",choices= c("2017"),multiple = FALSE,selected = "2017"),
selectInput("daypart2",label = "Day Part:",choices=c("Breakfast","Lunch/Dinner"),selected = c("Breakfast","Lunch/Dinner"),multiple = TRUE),
selectInput("mealpart2",label="Meal Part:",choices =c("Adult Beverage","App/Starter","Dessert","Ent/Main Dish","Non-Alcohol Beverage","Side/Extra","Snack"),selected = c("Adult Beverage","App/Starter","Dessert","Ent/Main Dish","Non-Alcohol Beverage","Side/Extra","Snack"),multiple = TRUE),
selectInput("courseCategory2",label = "Course Category:",choices = c('All','Asian Bowl','Baked Goods','Beef Dish','Beverage','Breaded Other',
'Breaded Protein','Breaded Vegetables','Breads','Breakfast Starch',
'Burgers','Chicken Dish','Combo Plates','Egg Dish','Fish Dish','Fried Dessert',
'Fries','Frozen Beverage','Ice Cream','Mexican','Mixed Grill','Nachos','Pasta/Noodles',
'Pizza','Pork Dish','Salad Main Dish','Sandwich','Shellfish Dish','Soup','Specialty Drinks'
),selected= 'All',multiple = FALSE),
uiOutput('restChoices2'),
br(),
h5("Edit data by demographic features below:"),
selectInput('gender2',label = "Gender:",choices = c("Female","Male"),multiple = TRUE,selected = c("Female","Male")),
selectInput('generation2',label = "Generation:",choices = c("Generation Z","Millennials","Generation X","Baby Boomers","Matures"),selected = c("Generation Z","Millennials","Generation X","Baby Boomers","Matures"),multiple = TRUE),
selectInput('ethnicity2',label ='Ethnicity:',choices = c("Asian","Black/African American (non-Hispanic)","Caucasian (non-Hispanic)","Hispanic","Mixed ethnic background","Other"),selected = c("Asian","Black/African American (non-Hispanic)","Caucasian (non-Hispanic)","Hispanic","Mixed ethnic background","Other"),multiple = TRUE),
selectInput('ea2',label = 'Eater Archetype:', choices = c("Affluent Socializers","Bargain Hunters","Busy Balancers","FS Hobbyist","FS Hobbyists","Functional Eater","Functional Eaters","Habitual Matures","Health Enthusiast","Health Enthusiasts"),selected = c("Affluent Socializers","Bargain Hunters","Busy Balancers","FS Hobbyist","FS Hobbyists","Functional Eater","Functional Eaters","Habitual Matures","Health Enthusiast","Health Enthusiasts"),multiple = TRUE)
))
########
ui <-
dashboardPage(
header,
sidebar,
body
)
###########
server<-function(input, output, session){
}
#####
shinyApp(ui = ui, server = server)
Thanks in advance for any help!!
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