添加误差线会弄乱我的情节线颜色

Question

没有误差线，我的 plot 看起来很棒，并且情节线颜色与符号颜色匹配，但是一旦我添加误差线，情节线的颜色似乎会随机化（并且与 plot 符号不匹配）：

plt.scatter(x1,y1, color='y', marker="s", alpha=0.6, s=50, label='House A')
plt.scatter(x2,y2, color='r', alpha=0.6, s=50, label='House B')
plt.scatter(x3,y3, color='c', marker='v', alpha=0.6, s=50, label='House C')
plt.scatter(x4,y4, color='g', marker='D', alpha=0.6, s=50, label='House D')
plt.plot(x1, y1, color='y')
plt.plot(x2, y2, color='r')
plt.plot(x3, y3, color='c')
plt.plot(x4, y4, color='g')

#error bars
plt.errorbar(x1,y1,yerr=y1error, ecolor='k', elinewidth=1, capsize=4, capthick=1,barsabove=False, alpha=1)
plt.errorbar(x2,y2,yerr=y2error, ecolor='k', elinewidth=1, capsize=4, capthick=1,barsabove=False, alpha=1)
plt.errorbar(x3, y3, yerr=y3error, ecolor='k', elinewidth=1, capsize=4, capthick=1,barsabove=False, alpha=1)
plt.errorbar(x4,y4,yerr=y4error, ecolor='k', elinewidth=1, capsize=4, capthick=1,barsabove=False, alpha=1)