key text color with png

[Bonyoung Koo]

In the released version of gnuplot (v3.7.3) the color of key text is the same as each plot in the graph.
In the new pre-released version (v3.8k), however, I found that the color of key text is all black.
I prefer key text with the color of each plot.
How can I achieve this with png terminal?
Thanks in advance.

[Hans-Bernhard Broeker]

You're omitting some factors in your description that influence this behaviour:

1) Which PNG driver do those two binaries use?

2) Are you sure this behaviour actually occured in the PNG output, rather than on-screen?

Check 'show version long' output for difference between these versions, beside the version number.

[Bonyoung Koo]

1. The two versions use the same libpng and libgd.

2. Yes, I checked the actual png outputs.

from 'show version long'
v3.7 patchlevel 3 - compile options:
-READLINE  +LIBREADLINE  -LIBGD  +LIBPNG  +NOCWDRC  +X11
v3.8k patchlevel 0 - compile options:
+READLINE  -LIBREADLINE  +GD_PNG  +GD_JPEG  +GD_TTF  -PNG  -NOCWDRC  +X11  +USE_MOUSE

I don't know why they behave differently. I welcome any suggestions.

[Hans-Bernhard Broeker]

> 1. The two versions use the same libpng and libgd.

No, they don't.  Your build of 3.7.3 doesn't use libgd at all, according to the 'show version long' output.  See that "-LIBGD" there?  It means the 3.7.3 build didn't see any libgd, and so it doesn't use it.