you can change text colour by 3 methods as per my expertise.
1. Firstly select text which you want to colour change in Adobe indesign. after selection go to toolbox or double click over T after clicking T display colour view put on value in rgb or cmyk or pick any colour in colour squre open after double click on tool box T.
2. short command press function key F5 apple mac or pc / go also click on window menu or above 4th display colour, click any colour which display in swatches or press function ke F6 display color and salect colour. text colour automatically change which you want but selected color only change.