GUI Text Color

#version 150

#moj_import <fog.glsl>

uniform sampler2D Sampler0;

uniform vec4 ColorModulator;
uniform float FogStart;
uniform float FogEnd;
uniform vec4 FogColor;

in float vertexDistance;
in vec4 vertexColor;
in vec2 texCoord0;

out vec4 fragColor;

void main() {
    vec4 color = texture(Sampler0, texCoord0) * vertexColor * ColorModulator;
    if (color.a < 0.1) {
        discard;
    }

    /* checks for standard grey GUI text color (RGB 636363) and makes it lighter. */
    if(color.r == 63/255.0 && color.g == 63/255.0 && color.b == 63/255.0){
        color = vec4(0.6588, 0.6588, 0.6588, color.a);
    }

    fragColor = linear_fog(color, vertexDistance, FogStart, FogEnd, FogColor);
}