m give one of the following color models: 'rgb', 'hsl', 'hsv' or 'hex'. Alpha vaiues in the items will be automatically added, so e.g. specified 'rgb' converts to rgba.
* @param {item[?](num,list)=} either one item which sends all three/four color parts as array or an array of three /four items each sending one of the color parts.
* @param {type=icon} icon type / size. valid types: 'micro','mini','midi','icon' (optional, default = 'icon')
*
* @see design/design_icons#Icons (list of available pictures)
*
* @