I mean something like:
Error!
As suggested by rekire not possible to set color the way you are doing.
You can use the method as suggested by rekire.
In you xml you can specify color for your textview as
android:textColor="#0EFFFF"
You can also set text color programaticaly
TextView tv= (TextView)findviewById(R.id.textView1);
tv.setTextColor(Color.RED);
To set color of particular words in textview, you can use spannable string
TextView tv= (TextView)findviewById(R.id.textView1);
tv.setText("");
String s="Hello World";
SpannableString ss= new SpannableString(s);
ss.setSpan(new ForegroundColorSpan(Color.GREEN), 0, 5, 0);
tv.setText(ss);