The "best" solutions right now are either (like EaglerReborn or EaglerForge ) or high-contrast resource packs that mimic shader lighting.
: Depending on your client, you may see an "Import" button. You typically upload an .epk file (the asset pack format used by Eaglercraft). shaders for eaglercraft best
But that is likely still 6–12 months away. Until then, the "best shaders for Eaglercraft" remain the creative, clever, and lightweight packs listed above. The "best" solutions right now are either (like