[Misiur]

pawn Код:

FadeToWhite(colour, Float:percent)
{
    if (percent <= 0.0) {
        return colour;
    }

    if (percent >= 1.0) {
        return 0xFFFFFF;
    }

    new
        r = (colour >> 16) & 0xFF,
        g = (colour >> 8) & 0xFF,
        b = colour & 0xFF,
        dr = floatround((0xFF - r) * percent),
        dg = floatround((0xFF - g) * percent),
        db = floatround((0xFF - b) * percent)
    ;

    return ((r + dr) << 16) + ((g + dg) << 8) + (b + db);
}

Good enough