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Adjust the yellow used for LINE_UNKNOWN so that it's always a bit
darker than the background, because the Java front end demonstrates
that it's a bit eyewatering when it _matches_ the background.

[originally from svn r9145]

--- a/loopy.c

+++ b/loopy.c

@@ -839,8 +839,14 @@

     ret[COL_FOREGROUND * 3 + 1] = 0.0F;

     ret[COL_FOREGROUND * 3 + 2] = 0.0F;

-    ret[COL_LINEUNKNOWN * 3 + 0] = 0.8F;

-    ret[COL_LINEUNKNOWN * 3 + 1] = 0.8F;

+    /*

+     * We want COL_LINEUNKNOWN to be a yellow which is a bit darker

+     * than the background. (I previously set it to 0.8,0.8,0, but

+     * found that this went badly with the 0.8,0.8,0.8 favoured as a

+     * background by the Java frontend.)

+     */

+    ret[COL_LINEUNKNOWN * 3 + 0] = ret[COL_BACKGROUND * 3 + 0] * 0.9F;

+    ret[COL_LINEUNKNOWN * 3 + 1] = ret[COL_BACKGROUND * 3 + 1] * 0.9F;

     ret[COL_LINEUNKNOWN * 3 + 2] = 0.0F;

     ret[COL_HIGHLIGHT * 3 + 0] = 1.0F;

-- 

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