A converter as described means to me that you have a component source (eg DVD) and you want to play it through a screen which doesn't have component, only RGB or VGA. If your screen has the ability to accept a component signal on its PR/CR/R - PB/CB/b - YG connections (which it has by this nonclementure), then there is no ned for a converter. Just stick your component outputting unit directly to the component inputs with a straight lead. You may need to configure your screen to tell it to expect a component signal, but that should be it really.
FWIW have a read of this
article about YUV, Y-Pb-Pr, it also has the colours you mention! Y = Green, Pb = Blue Pr = Red, and Y-U-V is "interchangeable" with Y-Pb-Pr.
HTH