Have you ever thought that lava should match nether biomes? I wondered that and started looking for some texture packs that add this feature, however I didn't like the color tones at all, so create this pack that adds 5 colors for lava. , One for each nether biome! also i added support for some others biomes.
-Soul sand valley
You can download it here: OptiFine Downloads
[1.16] - [1.19]
make sure you download the version corresponding to your minecraft version, otherwise it will not work