Is it possible to change the color of Task Box Text from Grey to White for example.
You can change the text color using onBeforeTaskRender event:
dp.onBeforeTaskRender = function(args) { if (args.type === "Group") { args.data.box.fontColor = "#ffffff"; } };
See also: https://api.daypilot.org/daypilot-gantt-onbeforetaskrender/