Update color palette.

Update bright colors with minor tweaks to the hues making them more distinct
in comparison to their dark compainions.
Update cyan both dark and bright, old being to similar to blue.

Author: roosta

colors/srcery.vim

@@ -23,15 +23,15 @@ let s:green          = ["#519F50", 2]
 let s:yellow         = ["#FBB829", 3]
 let s:blue           = ["#5573A3", 4]
 let s:magenta        = ["#E02C6D", 5]
-let s:cyan           = ["#1693A5", 6]
+let s:cyan           = ["#0AAEB3", 6]
 let s:gray           = ["#918175", 7]
 let s:bright_black   = ["#2D2C29", 8]
-let s:bright_red     = ["#DA4939", 9]
+let s:bright_red     = ["#F75341", 9]
 let s:bright_green   = ["#98BC37", 10]
-let s:bright_yellow  = ["#FFC66D", 11]
-let s:bright_blue    = ["#6D9CBE", 12]
+let s:bright_yellow  = ["#FED06E", 11]
+let s:bright_blue    = ["#8EB2F7", 12]
 let s:bright_magenta = ["#E35682", 13]
-let s:bright_cyan    = ["#34BEDA", 14]
+let s:bright_cyan    = ["#53FDE9", 14]
 let s:white          = ["#FCE8C3", 15]
 
 " default xterm colors.