Basic color is not replaced in style.css

Basic color is not replaced in style.css for selected theme.

If I add at the begin of themes/garland/style.css:

/* '#0072b9,#027ac6,#2385c2,#5ab5ee,#494949' => t('Blue Lagoon (Default)'), */

and select Bluemarine color theme, then in result style.css basic color is missing. This line is replaced with:

/* ',#336699,#6598cb,#6598cb,#000000' => t('Blue Lagoon (Default)'), */

If I comment line 275 then it seems to work correctly.