Fix: vela top cannot switch the theme (#5745)

Signed-off-by: howieyuen <howieyuen@outlook.com>

references/cli/top/config/color.go

@@ -291,7 +291,7 @@ func makeThemeConfigFileIfNotExist() bool {
 	if _, err := os.Open(filepath.Clean(themeConfigFilePath)); err != nil {
 		if os.IsNotExist(err) {
 			// make file if not exist
-			_ = os.MkdirAll(filepath.Clean(velaThemeHome), 0600)
+			_ = os.MkdirAll(filepath.Clean(velaThemeHome), 0700)
 			_ = os.WriteFile(filepath.Clean(themeConfigFilePath), []byte("name : "+DefaultTheme), 0600)
 		}
 		return false

references/cli/top/config/color_test.go

@@ -17,6 +17,8 @@ limitations under the License.
 package config
 
 import (
+	"os"
+	"strings"
 	"testing"
 
 	"github.com/gdamore/tcell/v2"
@@ -35,3 +37,11 @@ func TestColor(t *testing.T) {
 	c2 := Color("red")
 	assert.Equal(t, c2.Color(), tcell.GetColor("red").TrueColor())
 }
+
+func TestPersistentThemeConfig(t *testing.T) {
+	defer PersistentThemeConfig(DefaultTheme)
+	PersistentThemeConfig("foo")
+	bytes, err := os.ReadFile(themeConfigFilePath)
+	assert.Nil(t, err)
+	assert.True(t, strings.Contains(string(bytes), "foo"))
+}