Painting company uses interior paint (StoColor Sil In) for facade painting

but who can blame a painter for washing out used buckets and reusing them for transport, mixing/distributing. It's good re-/upcycling

Even if it can be confusing for us customers. With tools inside, however, it's clear

And: it's a good paint, we have it too. From inside the tool bucket

But you can also simply obscure the inscription, then everything would be fine.