1. Open Corel DRAW. Draw rectangle. Keep it selected
corel fountain fill
2. Click "Fountain Fill Dialog" from Fill Tool. AT Linear fill type select Red color for "From" and Yellow for "To" under color blend.Make a note that midpoint value is 50 by default. Click OK.
corel fountain fill
3. At 50, it's a smooth gradation of the two colors.
corel fountain fill
4. If you slide the midpoint slider towards left extreme i.e. to 1, Yellow color will be dominant in the result.
corel fountain fill
5. If you slide the midpoint slider towards right extreme i.e. to 99, Red color will be dominant in the result.
corel fountain fill
6. Bring back to 50, it's a smooth gradation of the two colors. Try rest of the fill types with different midpoint values. Please do not change any other settings.