関連ワード:  how to make a gradient in gimp    how to do a gradient in gimp    how to make a gradient background in gimp    how to make a transparent gradient in gimp    how to make a color gradient in gimp    how to make a radial gradient in gimp    how to make a custom gradient in gimp    how to make a rainbow gradient in gimp    how to make a gradient circle in gimp    how to make a circular gradient in gimp