One big lesson from HyperCard is the need to keep releasing updates.
HyperCard never got around to supporting color. At least, not properly; I think there were extensions to do it. HyperCard was released in 1987, the same year as the first color mac, but was only monochrome. The "Color Tools" came out in 1992(!) but still made life difficult by not treating color pictures the same way as monochrome pictures. Given that the whole idea of HyperCard was to have pretty graphics you can interact with, the lack of color was pretty crippling by the time most macs had color screens.
It was finally discontinued in 2004, and they'd never got around to implementing proper support for color graphics.
HyperCard never got around to supporting color. At least, not properly; I think there were extensions to do it. HyperCard was released in 1987, the same year as the first color mac, but was only monochrome. The "Color Tools" came out in 1992(!) but still made life difficult by not treating color pictures the same way as monochrome pictures. Given that the whole idea of HyperCard was to have pretty graphics you can interact with, the lack of color was pretty crippling by the time most macs had color screens.
It was finally discontinued in 2004, and they'd never got around to implementing proper support for color graphics.