CurveRange

Can limit the x and y values of an animation curve, and/or change the color of the curve in the inspector:

public class NaughtyComponent : MonoBehaviour
{
    [CurveRange(-1, -1, 1, 1)] // min.x = -1, min.y = -1, max.x = 1, max.y = 1
    public AnimationCurve curve;

    [CurveRange(EColor.Orange)]
    public AnimationCurve curve1;

    [CurveRange(0, 0, 5, 5, EColor.Red)]
    public AnimationCurve curve2;
}