diff --git a/logger_config.json b/logger_config.json
index 5194963..e58ae4c 100644
--- a/logger_config.json
+++ b/logger_config.json
@@ -28,5 +28,6 @@
         "WARN": "#fff600",
         "ERRO": "#ffa000",
         "CRIT": "#ff8181"
-    }
+    },
+    "time_color": "#28ffb6"
 }
\ No newline at end of file
diff --git a/src/logiliteal/utils/configs.py b/src/logiliteal/utils/configs.py
index 97a1c07..d236326 100644
--- a/src/logiliteal/utils/configs.py
+++ b/src/logiliteal/utils/configs.py
@@ -33,6 +33,7 @@ DEFAULT_CONFIG = {
     "weekday_format": "%A",
     "level_name": {"DEBUG": "DEBUG", "INFO": "INFO", "WARN": "WARN", "ERRO": "ERRO", "CRIT": "CRIT"},
     "level_color": {"DEBUG": "#c1d5ff", "INFO": "#c1ffff", "WARN": "#fff600", "ERRO": "#ffa000", "CRIT": "#ff8181"},
+    "time_color": "#28ffb6",
 }
 
 g_config_cache = None
diff --git a/src/logiliteal/utils/fmt.py b/src/logiliteal/utils/fmt.py
index 3bdb488..e8a2597 100644
--- a/src/logiliteal/utils/fmt.py
+++ b/src/logiliteal/utils/fmt.py
@@ -12,6 +12,8 @@ from .time import get_asctime, get_time, get_weekday, get_date
 from .styles import set_color, set_bg_color
 import re
 
+time_color = get_config("time_color")
+
 def fmt_level(level: str) -> int:
     """
     格式化日志级别
@@ -64,10 +66,10 @@ def fmt_placeholder(message: Any, use_date_color: bool = True) -> str:
         message = str(message)
     if use_date_color:
         message = message.format_map(SafeDict(
-            asctime = set_color(get_asctime(),"#28ffb6"),
-            time = set_color(get_time(),"#28ffb6"),
-            weekday = set_color(get_weekday(),"#28ffb6"),
-            date = set_color(get_date(),"#28ffb6")
+            asctime = set_color(get_asctime(),time_color),
+            time = set_color(get_time(),time_color),
+            weekday = set_color(get_weekday(),time_color),
+            date = set_color(get_date(),time_color)
         ))
     else:
         message = message.format_map(SafeDict(
diff --git a/src/logiliteal/utils/styles.py b/src/logiliteal/utils/styles.py
index d69c65e..4068344 100644
--- a/src/logiliteal/utils/styles.py
+++ b/src/logiliteal/utils/styles.py
@@ -8,19 +8,21 @@ py-logiliteal's style tools, used to format log output
 
 from typing import Union, Optional
 
-def _get_hex_to_ansi(hex_color: str) -> Union[Optional[str], None]:
+def _get_hex_to_ansi(hex_color: str|None) -> Union[Optional[str], None]:
     """
     将16进制颜色值转换为ANSI转义序列
     Convert hex color value to ANSI escape sequence
     :param hex_color: 16进制颜色值 Hex color value
     :return: ANSI转义序列 ANSI escape sequence
     """
+    if not hex_color:
+        return ""
     if not hex_color.startswith("#"):
         return None
     r, g, b = int(hex_color[1:3], 16), int(hex_color[3:5], 16), int(hex_color[5:7], 16)
     return f"\033[38;2;{r};{g};{b}m"
 
-def set_color(text: str, color: str) -> str:
+def set_color(text: str|None, color: str|None) -> str:
     """
     设置文本颜色
     Set text color
@@ -28,12 +30,16 @@ def set_color(text: str, color: str) -> str:
     :param color: 颜色值 Color value
     :return: 格式化后的文本 Formatted text
     """
+    if not text:
+        return ""
+    if not color:
+        return text
     ansi = _get_hex_to_ansi(color)
     if not ansi:
         return text
     return f"{ansi}{text}\033[0m"
 
-def set_bg_color(text: str, color: str) -> str:
+def set_bg_color(text: str|None, color: str|None) -> str:
     """
     设置文本背景颜色
     Set text background color
@@ -41,14 +47,17 @@ def set_bg_color(text: str, color: str) -> str:
     :param color: 颜色值 Color value
     :return: 格式化后的文本 Formatted text
     """
+    if not text:
+        return ""
+    if not color:
+        return text
     ansi = _get_hex_to_ansi(color)
     if not ansi:
         return text
-    # 将前景色ANSI代码转换为背景色代码 (38→48)
     ansi = ansi.replace("38;", "48;")
     return f"{ansi}{text}\033[0m"
 
-def set_style(text: str, bold: bool = False, underline: bool = False, reverse: bool = False) -> str:
+def set_style(text: str|None, bold: bool = False, underline: bool = False, reverse: bool = False) -> str:
     """
     设置文本样式
     Set text style
@@ -58,6 +67,8 @@ def set_style(text: str, bold: bool = False, underline: bool = False, reverse: b
     :param reverse: 是否反相 Is reverse
     :return: 格式化后的文本 Formatted text
     """
+    if not text:
+        return ""
     ansi = ""
     if bold:
         ansi += "\033[1m"
diff --git a/tests/t-configs.py b/tests/t-configs.py
index 0dbc684..6f385ce 100644
--- a/tests/t-configs.py
+++ b/tests/t-configs.py
@@ -4,7 +4,7 @@ from pathlib import Path
 project_root = Path(__file__).parent.parent
 sys.path.append(str(project_root))
 
-from src.logiliteal.utils.configs import get_config, set_config, reset_config
+from src.logiliteal.utils.configs import get_config, set_config, reset_config, create_backup
 
 print(f"\n配置更换测试")
 set_config("file_level", "DEBUG")