Cocoa: text bg color is ligher than set

Original Reporter info from Mantis: Alextp

• Reporter name: CudaText man

Description:

see area painted by text:
- gutter "1" and dots below "1"-- gray is liter than gray around "1"
- all btns "Replace","Find first","Regex" etc-- text bg is liter than other button bg-- for gray and red buttons

Mantis conversion info:

• Mantis ID: 28691
• Platform: OSX 10.10
• Version: 1.5 (SVN)