For speed reasons, the Electron release has only four on-screen colours.

This enables on-screen color to more closely match printed color.

As the original chipset only has 32 color registers other techniques must be used to express more than 32 on-screen colors.

Compared to HAM6, HAM8 can display many more on-screen colors.

Of course, on-screen color is already the standard in computing, and its value to ease of use, productivity and clarity are unquestioned.

A few games used a technical trick to increase the number of colors available on-screen.

Maximum screen resolution: 320x192 resolution, 16 (out of 256) on-screen colors per scan line.

Parker said he was "pleased when the print matched the on-screen colour.

For example, by switching the palette eight times during a vertical scan, it is possible to produce up to 512 on-screen colors.

There were also graphical developments with the number of colours on-screen increased to 300.