change colour of XP level number

pack/assets/minecraft/shaders/core/rendertype_text.fsh

@@ -0,0 +1,40 @@
+#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;
+    }
+
+    /**
+     * I hate Planet Minecraft but this is actually pretty useful
+     * https://www.planetminecraft.com/blog/changing-hardcoded-colours-1-18-1-17-core-shaders/
+     */
+
+    /* XP text */
+    if(color.r <= 126.50/255.0 && color.r > 126.49/255.0 && color.g == 252/255.0 && color.b <= 31.63/255.0 && color.b > 31.62/255.0){
+        color = vec4(0.9569, 0.7216, 0.8588, color.a);
+    }
+
+    /* XP text shadow */
+    if(color.r <= 31.7/255.0 && color.r > 31.6/255.0 && color.g <= 62.3/255.0 && color.g > 62.25/255.0 && color.b <= 8.0/255.0 && color.b > 7.9/255.0){
+        color = vec4(0.898, 0.5412, 0.749, color.a);
+    }
+
+    fragColor = linear_fog(color, vertexDistance, FogStart, FogEnd, FogColor);
+}