Deluxe Paint IV, which did not include Silva as the lead programmer, was significantly less elegant and crashed more often than the predecessors, though it did offer significant new features like non-bitplane-indexed Hold-and-Modify support.
"[" and "]" hotkeys could step through the indexed palette, turning indexed-pixel-painting into a fast two-handed mouse+keys process, and the right mouse button would paint with the background colour (instead of bringing up a context sensitive menu as is common in modern packages) .