title: Change text color of geom_text
body: <p>I want to change color for all text in my plot . I have code, but color of my text not white. How to change text color on white?</p>
  
  <p>data </p>
  
  <pre><code>dput(tt)
  structure(list(STREAM = c("Applications", "BI", "CRE &amp; Telecom &amp; Scoring", 
  "FACE &amp; Antifraud", "IFRS9 &amp; Provision", "Portfolio &amp; Production", 
  "Техдолг", "Операционка"), PLANS = c(61, 2, 2, 23, 13, 29, 12, 
  16), DONE = c(0.8, 0.5, 0.85, 0.65, 0.95, 0.45, 0.9, 0.3)), .Names = c("STREAM", 
  "PLANS", "DONE"), row.names = c(NA, -8L), class = c("tbl_df", 
  "tbl", "data.frame"))
  </code></pre>
  
  <p>code </p>
  
  <pre><code>library(ggplot2)
  
  library(dplyr)
  tt$n=tt$PLANS
  tt$sp=tt$DONE
  tt$perc=paste(round(tt$sp * 100, 1), "%", sep="")
  # Make the plot
  
  tt$max_sp=1
  tt$pos &lt;- 0.5 * (cumsum(tt$n) + cumsum(c(0, tt$n[-length(tt$n)])))
  pos=tt$pos
  # Colour pallet
  #cbbPalette &lt;-c("#94C2DA", "#707070", "#DCBFAD", "#707070", "#009E73", "#F0E442", "#0072B2", "#D55E00", "#CC79A7")
  cbbPalette &lt;-c("#ac7070", "#d39c3f", "#654982", "#4a6785", "#8eb021", "#f15c75", "#815b3a", "#7f7f7f")
  #Create chart
  p=ggplot(data = tt) + 
    geom_bar(aes(x = pos, width = n, y = sp, fill = `STREAM`), stat = "identity") + 
    geom_text(aes(x = pos, width = n, y = sp, label = perc,color="white"), vjust=0, position = position_stack(vjust = 0.5), size = 7)  +
    scale_x_continuous(labels = tt$`STREAM`, breaks = pos)+
    scale_fill_manual(values=cbbPalette)+
    geom_bar(aes(x = pos, width = n, y = max_sp, fill = `STREAM`), stat = "identity",alpha = 0.6) +
    ylim(-1,1)+
  
    theme_minimal() +  theme(
      axis.text = element_blank(),
      axis.title = element_blank(),
      panel.grid = element_blank(),
      legend.position="none" 
  
    )+coord_polar(start = 0) 
  p
  </code></pre>
  
  <p>Result 
  <a href="https://i.stack.imgur.com/cR2mG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cR2mG.png" alt="enter image description here"></a></p>